Aerial view of Waste Water Treatment Plant

Sevenson Environmental, National Grid’s Remediation Contractor, is continuing mobilization activities, which includes bringing construction equipment, materials and temporary facilities to the site. Sevenson is currently finalizing activation of the electrical service with LIPA. Sevenson continued pre-trenching activities this week. Debris that is removed during pre-trenching is placed inside the designated storage pad, sprayed with long duration foam and covered with a plastic liner to mitigate any potential odors until the debris is removed from the site for disposal. On Thursday six trucks were utilized to transport and dispose of the soil mix wall spoils to a thermal facility in New Jersey.

Aerial view of construction of barrier wall

Sevenson’s soil mix wall subcontractor, Geocon, continued the construction of the soil mix wall along the perimeter of the site adjacent to the Post Office. A total of 62 soil mix wall columns have been installed.

Two-Week Outlook

Sevenson is expected to continue the mobilization of equipment, materials, and temporary facilities. Mobilization and set-up of the water treatment plant and the temporary fabric structure will begin. Sevenson and Geocon are also expected to continue pre-trenching activities and the construction of the soil mix wall along the perimeter of the work area.

General hours of operation will continue to be Monday through Friday, 7:00 AM to 5:00 PM.